Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS5628766 A
Publication typeGrant
Application numberUS 08/496,407
Publication dateMay 13, 1997
Filing dateJun 29, 1995
Priority dateJun 29, 1995
Fee statusLapsed
Publication number08496407, 496407, US 5628766 A, US 5628766A, US-A-5628766, US5628766 A, US5628766A
InventorsLanny L. Johnson
Original AssigneeJohnson; Lanny L.
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Method of using a mini-screw to anchor a suture
US 5628766 A
Abstract
A surgical device is provided for anchoring suture into bone. The device includes a threaded portion having rounded exterior thread edges. An aperture for carrying suture passes through the threaded portion at a location intermediate the ends of the threaded position, the aperture extending in a direction substantially transversely to the longitudinal axis of the device. When the device is inserted within a cavity in the bone having a threaded sidewall, the suture is compressed between the threads of the device and the sidewall.
Images(1)
Previous page
Next page
Claims(1)
What is claimed is:
1. A process for anchoring suture into bone, comprising:
forming a cavity within the bone having a compacted sidewall;
threading the sidewall of the cavity; and
inserting a threaded portion of a suture anchor within the cavity, said portion including threads with rounded exterior edges and having an exterior diameter less than that of the threaded sidewall, said anchor further including an aperture passing through the anchor in a substantially transverse direction to a longitudinal axis of the anchor and at a location intermediate the ends of the threaded portion, said aperture receiving a length of suture having ends projecting from the aperture which are compressed between the threads of the anchor and the sidewall when said anchor is inserted within the cavity.
Description
BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to a surgical device of the type which screws into bone in order to anchor suture to the bone for orthopaedic surgical procedures.

2. Prior Art

The use of screws as suture anchors is well known. For example, one such device is described in U.S. Pat. No. 4,632,100 by Somers et al. wherein a surgical screw is provided with a longitudinal bore within which suture is secured so that when the screw is implanted in bone, the ends of the suture extend from the proximal end of the screw so as to be accessible to the surgeon.

Other known screw anchors have projecting tips located at the proximal ends of the screws, the tips including a transverse aperture through which suture may be threaded by the surgeon.

A still further surgical screw is disclosed in U.S. Pat. No. 5,116,337 by Johnson which includes a radially extending hole located adjacent to the end of the screw. However, the purpose of the hole is not to receive suture, but accept a wire which prevents the screw from turning when a driver used to force the screw into place within the bone is detached from the screw.

SUMMARY OF THE INVENTION

The present invention is directed to a suture anchor which is provided with a threaded portion having rounded thread ends and an aperture which is oriented transversely to the longitudinal axis of the anchor and passes through the anchor intermediate the ends of the threaded portion of the screw. When suture is passed through the aperture and the threaded portion is implanted in the bone, suture ends extending from the aperture are compressed between the screw threads and the surrounding bone to firmly anchor the suture. In the case where the anchor is formed of a biodegradable material, the initial mechanical attachment of the suture transforms to a biological adherence as the screw degrades.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention will be described in further detail with respect to the accompanying drawing which illustrates a preferred embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

Referring to the drawing, a surgical screw anchor is shown which is generally designated as 10. The anchor preferably is formed from a conventional biodegradable material suitable for surgical applications. According to a preferred embodiment of the invention, anchor 10 includes a threaded portion 12 and a portion 14 formed at the proximal end of the anchor adapted to be engaged by a conventional driver by which the threaded portion is moved into operative position within the bone. Preferably, portion 14 is dimensioned at its juncture with threaded portion 12 to provide a weakened point such that when the screw is firmly positioned within the bone, further actuation by the driver causes portion 14 to shear from its connection with threaded portion 12 thereby leaving no material projecting from the proximal end of the implanted portion 12.

Intermediate the ends of the threaded portion 12, an aperture 16 is provided which extends through the screw in a direction substantially transversely to the screw's longitudinal axis. The aperture is dimensioned to receive a length of suture material.

The threads themselves are formed with rounded outer edges 18, rather than sharp edges customarily found on screw threads. The purpose for this now will be explained.

In the preparation of the site for the implantation, a series of increasingly larger instruments are inserted into a cavity formed in the bone. This technique is generally described in the previously identified U.S. Pat. No. 5,116,337. As a result, the wall of the cavity is compacted bone having improved mechanical properties which aid in solid attachment of the screw within the cavity. Additionally, the compaction permits a biological response to be initiated between the compacted bone and the materials which interface with the cavity's wall. The wall of the cavity is then tapped so as to provide female threads for receiving the surgical screw. The exterior diameter of the tap is dimensioned to be greater than the exterior diameter of the anchor's threads.

When the surgeon completes the preparation of the site, as just described, a length of suture is passed through aperture 16 of the anchor, and the threaded portion 12 is driven into the cavity by conventional means. Because of the differences in diameters between the cavity's female threads and those of portion 12, and inasmuch as the threaded edges 18 are rounded, the ends of suture extending from aperture 16 are not severed as the anchor is implanted within the cavity. Instead, the suture is compressed between the threads of portion 12 and the threaded wall of the cavity. As a result, the suture is firmly anchored for the surgeon's use.

As stated previously, once the anchor 10 is firmly implanted, portion 14 shears off. Alternatively, if shearing fails or this feature is not provided for in the screw's design, the proximal portion 14 can be severed from the remainder of the anchor by conventional means provided that care is exercised to not cut the suture in the process.

While a preferred embodiment of the invention has been disclosed, variations are contemplated coming within the scope of the accompanying claims.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US3842824 *Mar 19, 1973Oct 22, 1974A NeufeldNotched surgical pin and breaking tool therefor
US5108399 *Sep 15, 1989Apr 28, 1992Boehringer Ingelheim GmbhDevice for osteosynthesis and process for producing it
US5116337 *Jun 27, 1991May 26, 1992Johnson Lanny LFixation screw and method for ligament reconstruction
US5129904 *May 24, 1989Jul 14, 1992Illi Oscar EOsteosynthetic implant
US5236431 *Jul 22, 1991Aug 17, 1993SynthesResorbable fixation device with controlled stiffness for treating bodily material in vivo and introducer therefor
DE2747312A1 *Oct 21, 1977Apr 26, 1979UllrichBone piece joining screw - has round-section thread with radiused lands to avoid hairline cracks in bone
WO1994028811A1 *Jun 3, 1994Dec 22, 1994Hip Developments Pty LtdSurgical screw and washer
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US5961521 *Feb 13, 1998Oct 5, 1999Smith & Nephew, Inc.Surgical screw and washer
US6056752 *Oct 23, 1998May 2, 2000Smith & Nephew, Inc.Fixation of cruciate ligament grafts
US6123710 *Apr 11, 1996Sep 26, 2000Smith & Nephew, Inc.Process and article for knee reconstruction
US6235057Feb 19, 1997May 22, 2001Smith & Nephew, Inc.Method for soft tissue reconstruction
US6623492Jan 25, 2000Sep 23, 2003Smith & Nephew, Inc.Tissue fastener
US6656185Oct 24, 2001Dec 2, 2003Spineology Inc.Tension band clip
US6743233 *Aug 2, 2000Jun 1, 2004Orthopaedic Biosystems, Ltd., Inc.Medical screw and method of installation
US6764513Nov 7, 2001Jul 20, 2004Brian T. DowlingTibia tether
US6802862Sep 8, 2000Oct 12, 2004Smith & Nephew, Inc.Method for soft tissue reconstruction
US7658751Feb 9, 2010Biomet Sports Medicine, LlcMethod for implanting soft tissue
US7695503Apr 13, 2010Biomet Sports Medicine, LlcMethod and apparatus for soft tissue attachment
US7749250Jul 6, 2010Biomet Sports Medicine, LlcSoft tissue repair assembly and associated method
US7776077Aug 17, 2010Biomet Sports Medicince, LLCMethod for soft tissue attachment
US7819898Aug 12, 2005Oct 26, 2010Biomet Sports Medicine, LlcMethod and apparatus for soft tissue fixation
US7828820Nov 9, 2010Biomet Sports Medicine, LlcMethod and apparatuses for securing suture
US7857830Oct 9, 2007Dec 28, 2010Biomet Sports Medicine, LlcSoft tissue repair and conduit device
US7905903Nov 6, 2007Mar 15, 2011Biomet Sports Medicine, LlcMethod for tissue fixation
US7905904Mar 15, 2011Biomet Sports Medicine, LlcSoft tissue repair device and associated methods
US7909851Mar 22, 2011Biomet Sports Medicine, LlcSoft tissue repair device and associated methods
US7959650Jun 14, 2011Biomet Sports Medicine, LlcAdjustable knotless loops
US7967843Jun 28, 2011Biomet Sports Medicine, LlcMethod for soft tissue attachment
US8088130May 29, 2009Jan 3, 2012Biomet Sports Medicine, LlcMethod and apparatus for coupling soft tissue to a bone
US8109965Feb 7, 2012Biomet Sports Medicine, LLPMethod and apparatus for soft tissue fixation
US8118836Aug 22, 2008Feb 21, 2012Biomet Sports Medicine, LlcMethod and apparatus for coupling soft tissue to a bone
US8128658Aug 22, 2008Mar 6, 2012Biomet Sports Medicine, LlcMethod and apparatus for coupling soft tissue to bone
US8137382Aug 22, 2008Mar 20, 2012Biomet Sports Medicine, LlcMethod and apparatus for coupling anatomical features
US8197511Mar 4, 2009Jun 12, 2012Miller M ToddSuture anchor having a suture engaging structure and inserter arrangement
US8221454Oct 27, 2009Jul 17, 2012Biomet Sports Medicine, LlcApparatus for performing meniscus repair
US8231654May 6, 2011Jul 31, 2012Biomet Sports Medicine, LlcAdjustable knotless loops
US8251998Aug 28, 2012Biomet Sports Medicine, LlcChondral defect repair
US8273106Dec 22, 2010Sep 25, 2012Biomet Sports Medicine, LlcSoft tissue repair and conduit device
US8292921Mar 11, 2011Oct 23, 2012Biomet Sports Medicine, LlcSoft tissue repair device and associated methods
US8298262Jun 22, 2009Oct 30, 2012Biomet Sports Medicine, LlcMethod for tissue fixation
US8303604Sep 30, 2009Nov 6, 2012Biomet Sports Medicine, LlcSoft tissue repair device and method
US8308780Nov 13, 2012Biomet Sports Medicine, LlcMethod for soft tissue attachment
US8317825Apr 7, 2009Nov 27, 2012Biomet Sports Medicine, LlcSoft tissue conduit device and method
US8337525Mar 11, 2011Dec 25, 2012Biomet Sports Medicine, LlcSoft tissue repair device and associated methods
US8343227May 27, 2010Jan 1, 2013Biomet Manufacturing Corp.Knee prosthesis assembly with ligament link
US8361113Jun 22, 2009Jan 29, 2013Biomet Sports Medicine, LlcMethod and apparatus for coupling soft tissue to a bone
US8409253Apr 2, 2013Biomet Sports Medicine, LlcSoft tissue repair assembly and associated method
US8439946May 21, 2012May 14, 2013Stryker CorporationSuture anchor having a suture engaging structure and inserter arrangement
US8491632Aug 15, 2011Jul 23, 2013Biomet Sports Medicine, LlcMethod and apparatus for soft tissue fixation
US8500818May 27, 2010Aug 6, 2013Biomet Manufacturing, LlcKnee prosthesis assembly with ligament link
US8506596Nov 8, 2010Aug 13, 2013Biomet Sports Medicine, LlcMethods and apparatuses for securing suture
US8506597Oct 25, 2011Aug 13, 2013Biomet Sports Medicine, LlcMethod and apparatus for interosseous membrane reconstruction
US8551140Jul 13, 2011Oct 8, 2013Biomet Sports Medicine, LlcMethod and apparatus for coupling soft tissue to bone
US8562645May 2, 2011Oct 22, 2013Biomet Sports Medicine, LlcMethod and apparatus for forming a self-locking adjustable loop
US8562647Oct 29, 2010Oct 22, 2013Biomet Sports Medicine, LlcMethod and apparatus for securing soft tissue to bone
US8574235May 19, 2011Nov 5, 2013Biomet Sports Medicine, LlcMethod for trochanteric reattachment
US8597327Nov 3, 2010Dec 3, 2013Biomet Manufacturing, LlcMethod and apparatus for sternal closure
US8608777Oct 21, 2011Dec 17, 2013Biomet Sports MedicineMethod and apparatus for coupling soft tissue to a bone
US8632568 *Sep 24, 2007Jan 21, 2014Stryker CorporationSuture anchor having a suture engaging structure and inserter arrangement
US8632569Dec 20, 2012Jan 21, 2014Biomet Sports Medicine, LlcSoft tissue repair device and associated methods
US8652171May 2, 2011Feb 18, 2014Biomet Sports Medicine, LlcMethod and apparatus for soft tissue fixation
US8652172Jul 6, 2011Feb 18, 2014Biomet Sports Medicine, LlcFlexible anchors for tissue fixation
US8672968Feb 8, 2010Mar 18, 2014Biomet Sports Medicine, LlcMethod for implanting soft tissue
US8672969Oct 7, 2011Mar 18, 2014Biomet Sports Medicine, LlcFracture fixation device
US8721684Mar 5, 2012May 13, 2014Biomet Sports Medicine, LlcMethod and apparatus for coupling anatomical features
US8771316Mar 5, 2012Jul 8, 2014Biomet Sports Medicine, LlcMethod and apparatus for coupling anatomical features
US8771352May 17, 2011Jul 8, 2014Biomet Sports Medicine, LlcMethod and apparatus for tibial fixation of an ACL graft
US8777956Aug 16, 2012Jul 15, 2014Biomet Sports Medicine, LlcChondral defect repair
US8801783May 27, 2010Aug 12, 2014Biomet Sports Medicine, LlcProsthetic ligament system for knee joint
US8840645Feb 17, 2012Sep 23, 2014Biomet Sports Medicine, LlcMethod and apparatus for coupling soft tissue to a bone
US8858596Mar 20, 2012Oct 14, 2014Stryker CorporationSuture anchor having a suture engaging structure
US8900314Dec 19, 2012Dec 2, 2014Biomet Manufacturing, LlcMethod of implanting a prosthetic knee joint assembly
US8932331Mar 5, 2012Jan 13, 2015Biomet Sports Medicine, LlcMethod and apparatus for coupling soft tissue to bone
US8936621Nov 3, 2011Jan 20, 2015Biomet Sports Medicine, LlcMethod and apparatus for forming a self-locking adjustable loop
US8968364May 17, 2011Mar 3, 2015Biomet Sports Medicine, LlcMethod and apparatus for fixation of an ACL graft
US8998949Aug 16, 2006Apr 7, 2015Biomet Sports Medicine, LlcSoft tissue conduit device
US9005287Nov 4, 2013Apr 14, 2015Biomet Sports Medicine, LlcMethod for bone reattachment
US9017381Apr 10, 2007Apr 28, 2015Biomet Sports Medicine, LlcAdjustable knotless loops
US9078644Mar 8, 2010Jul 14, 2015Biomet Sports Medicine, LlcFracture fixation device
US9149267Nov 10, 2011Oct 6, 2015Biomet Sports Medicine, LlcMethod and apparatus for coupling soft tissue to a bone
US9173651Oct 22, 2012Nov 3, 2015Biomet Sports Medicine, LlcSoft tissue repair device and associated methods
US9216078May 8, 2013Dec 22, 2015Biomet Sports Medicine, LlcMethod and apparatus for tibial fixation of an ACL graft
US9259217Jan 3, 2012Feb 16, 2016Biomet Manufacturing, LlcSuture Button
US9271713Nov 14, 2011Mar 1, 2016Biomet Sports Medicine, LlcMethod and apparatus for tensioning a suture
US9314241Feb 1, 2013Apr 19, 2016Biomet Sports Medicine, LlcApparatus for coupling soft tissue to a bone
US20030199877 *Mar 7, 2003Oct 23, 2003Peter SteigerDevice for fixing surgical implants
US20070049944 *Sep 29, 2006Mar 1, 2007Arthrotek, Inc.Method and apparatus for soft tissue fixation
US20080009904 *Jun 29, 2007Jan 10, 2008Bourque Barnard JSoft Tissue Fixation
US20080167660 *Jan 4, 2007Jul 10, 2008Nathan Ryan MoreauSuture anchor and inserter arrangement
US20090082807 *Sep 24, 2007Mar 26, 2009Miller M ToddSuture anchor having a suture engaging structure and inserter arrangement
US20090234387 *Mar 4, 2009Sep 17, 2009Stryker CorporationSuture anchor having a suture engaging structure and inserter arrangement
US20100049251 *Mar 30, 2009Feb 25, 2010Kuslich Stephen DMethod and device for interspinous process fusion
US20110190815 *Sep 8, 2009Aug 4, 2011Saliman Justin DKnotless suture anchors
EP1502552A2 *Oct 24, 2001Feb 2, 2005The Spineology Group, LLCTension band clip
EP2292148A1 *Sep 4, 2009Mar 9, 2011IST Innovative Shoulder Technology AGBone anchor
WO2002038059A3 *Oct 24, 2001Feb 20, 2003Spineology Group LlcTension band clip
Classifications
U.S. Classification606/232, 606/314
International ClassificationA61B19/00, A61B17/04, A61B17/86
Cooperative ClassificationA61B17/0401, A61B2017/044, A61B17/8625, A61B2090/037, A61B2017/0414
European ClassificationA61B17/04A
Legal Events
DateCodeEventDescription
Jul 8, 1999ASAssignment
Owner name: INSTRUMENT MAKAR, INC., MICHIGAN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:JOHNSON, LANNY L.;REEL/FRAME:010070/0856
Effective date: 19990521
Oct 30, 2000FPAYFee payment
Year of fee payment: 4
Mar 12, 2002ASAssignment
Owner name: SMITH & NEPHEW, INC., TENNESSEE
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:INSTRUMENT MAKAR, INC.;REEL/FRAME:012707/0292
Effective date: 20020220
Sep 22, 2004FPAYFee payment
Year of fee payment: 8
Dec 1, 2004REMIMaintenance fee reminder mailed
Nov 17, 2008REMIMaintenance fee reminder mailed
May 13, 2009LAPSLapse for failure to pay maintenance fees
Jun 30, 2009FPExpired due to failure to pay maintenance fee
Effective date: 20090513